292 Obstetrics and Gynecology Board Review •••
❍ What is the classic clinical sign of LGV?
A “groove sign,” a linear depression between the inguinal and femoral groups of inflamed nodes.
❍ What is the treatment of LGV?
Oral tetracycline or erythromycin (500 mg every 6 hours) for 21 days.
❍ What causes molluscum contagiosum?
Poxvirus. It is acquired both through sexual and nonsexual contact.
❍ What is the difference between the ulcer of chancroid and syphilis?
The lesion of chancroid is always painful and tender, whereas the chancre of syphilis is usually asymptomatic.
❍ What is chancroid caused by?
Haemophilus ducreyi, a nonmotile, anaerobic, and small gram-negative rod.
❍ What is the treatment of pediculosis pubis?
Topical application of lindane (Kwell) or 5% permethrin dermal cream (Nix). The organism responsible is the crab
louse Phthirus pubis.
❍ How is scabies diagnosed?
It is diagnosed by scraping of the papules, vesicles, or burrows and looking for the mite Sarcoptes scabiei under the
microscope.
❍ What is the classic finding on wet smear of bacterial vaginosis?
Clue cells, which are vaginal epithelial cells with clusters of bacteria covering their surfaces.
❍ What is the treatment of choice for bacterial vaginosis?
Metronidazole 500 mg every 12 hours for 7 days. Alternatives included clindamycin or Augmentin.
❍ The appearance of a “strawberry cervix” is a classic sign of what infection?
Trichomonas vaginalis.
❍ How is vulvovaginal yeast infection diagnosed?
By wet mount or KOH mount finding of hyphae or yeast culture of vaginal wall.
❍ How often are hyphae seen on a wet mount with a person who has positive yeast cultures?
30% to 50% of the time.
❍ If hyphae are not noted on wet mount, what other characteristic findings are noted with yeast infection?
Swelling of the vagina and vulva, burning/pain with sex that stays afterward, and adherent white thick discharge at
vaginal walls.